EP0309150A3 - Datenwiedergabegerät - Google Patents

Datenwiedergabegerät Download PDF

Info

Publication number
EP0309150A3
EP0309150A3 EP19880308528 EP88308528A EP0309150A3 EP 0309150 A3 EP0309150 A3 EP 0309150A3 EP 19880308528 EP19880308528 EP 19880308528 EP 88308528 A EP88308528 A EP 88308528A EP 0309150 A3 EP0309150 A3 EP 0309150A3
Authority
EP
European Patent Office
Prior art keywords
reproducing apparatus
data reproducing
clock regeneration
circuit
regeneration circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19880308528
Other languages
English (en)
French (fr)
Other versions
EP0309150B1 (de
EP0309150A2 (de
Inventor
Noboru C/O Patents Division Murabayashi
Keiji C/O Patents Division Kanota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of EP0309150A2 publication Critical patent/EP0309150A2/de
Publication of EP0309150A3 publication Critical patent/EP0309150A3/de
Application granted granted Critical
Publication of EP0309150B1 publication Critical patent/EP0309150B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G11B2020/1438—8 to 10 modulation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Television Signal Processing For Recording (AREA)
  • Digital Magnetic Recording (AREA)
EP88308528A 1987-09-21 1988-09-15 Datenwiedergabegerät Expired - Lifetime EP0309150B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62238570A JP2661062B2 (ja) 1987-09-21 1987-09-21 データ再生装置
JP238570/87 1987-09-21

Publications (3)

Publication Number Publication Date
EP0309150A2 EP0309150A2 (de) 1989-03-29
EP0309150A3 true EP0309150A3 (de) 1991-03-20
EP0309150B1 EP0309150B1 (de) 1994-11-23

Family

ID=17032185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88308528A Expired - Lifetime EP0309150B1 (de) 1987-09-21 1988-09-15 Datenwiedergabegerät

Country Status (4)

Country Link
US (1) US4862296A (de)
EP (1) EP0309150B1 (de)
JP (1) JP2661062B2 (de)
DE (1) DE3852164T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03205920A (ja) * 1989-10-30 1991-09-09 Hitachi Ltd 位相同期回路、記憶装置および磁気ディスク記憶装置
KR940011436B1 (ko) * 1989-04-19 1994-12-15 가부시끼가이샤 히다찌세이사꾸쇼 자기디스크 기억장치
JP3282180B2 (ja) * 1990-08-28 2002-05-13 ソニー株式会社 磁気記録再生装置
US5867332A (en) * 1992-06-22 1999-02-02 Fujitsu Limited Window margining apparatus with delayed read data single shot (DRDSS) circuit for adjustably delaying a data pulse reproduced from a data storage device
WO1994011952A1 (en) * 1992-11-13 1994-05-26 Ampex Systems Corporation Pseudo clock extractor
US5570243A (en) * 1993-06-22 1996-10-29 Fujitsu Limited Variable delay circuit including current mirror and ramp generator circuits for use in the read channel of a data storage device
JPH10303747A (ja) * 1997-04-25 1998-11-13 Matsushita Electric Ind Co Ltd 複数周波数帯域ｐｌｌ周波数シンセサイザ
US7496583B2 (en) * 2004-04-30 2009-02-24 Microsoft Corporation Property tree for metadata navigation and assignment
JP4284370B2 (ja) * 2007-03-09 2009-06-24 株式会社東芝 ビデオサーバ及びビデオ編集システム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2026288A (en) * 1978-07-17 1980-01-30 Digital Equipment Corp Reader for data recorded on magnetic disc at plural densities
US4534044A (en) * 1983-05-02 1985-08-06 Honeywell Information Systems Inc. Diskette read data recovery system
US4577241A (en) * 1983-04-12 1986-03-18 Sony Corporation Digital video tape recorder apparatus
US4644419A (en) * 1983-05-10 1987-02-17 Panafacom Limited Floppy disk unit
DE3631369A1 (de) * 1985-09-13 1987-03-26 Hitachi Ltd Digitalsignalwiedergabevorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843632A (ja) * 1981-09-01 1983-03-14 テクトロニツクス・インコ−ポレイテツド 位相固定回路
JPS5850827A (ja) * 1981-09-08 1983-03-25 Fujitsu Ltd フェーズ・ロック・ループ回路
US4472818A (en) * 1981-12-02 1984-09-18 Standard Microsystems Corporation Data separator
JPS58105882A (ja) * 1981-12-21 1983-06-23 Nissan Motor Co Ltd 車体ル−フ構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2026288A (en) * 1978-07-17 1980-01-30 Digital Equipment Corp Reader for data recorded on magnetic disc at plural densities
US4577241A (en) * 1983-04-12 1986-03-18 Sony Corporation Digital video tape recorder apparatus
US4534044A (en) * 1983-05-02 1985-08-06 Honeywell Information Systems Inc. Diskette read data recovery system
US4644419A (en) * 1983-05-10 1987-02-17 Panafacom Limited Floppy disk unit
DE3631369A1 (de) * 1985-09-13 1987-03-26 Hitachi Ltd Digitalsignalwiedergabevorrichtung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 154 (E-325)(1877) 28 June 1985, & JP-A-60 033791 (TOSHIBA K.K.) 21 February 1985, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 167 (P-372)(1890) 12 July 1985, & JP-A-60 043264 (SANYO DENKI K.K.) 7 March 1985, *

Also Published As

Publication number Publication date
EP0309150B1 (de) 1994-11-23
US4862296A (en) 1989-08-29
EP0309150A2 (de) 1989-03-29
DE3852164T2 (de) 1995-04-27
DE3852164D1 (de) 1995-01-05
JP2661062B2 (ja) 1997-10-08
JPS6479977A (en) 1989-03-24

Similar Documents

Publication Publication Date Title
EP0182701A3 (en) Phase-locked loop for mfm data recording
GB2062905A (en) Disc record reproducing apparatuses
CA2023963A1 (en) Optical recording medium and method for recording and reproducing information therein
JPH0294063A (ja) 記録データ読取り方式
EP0309150A3 (de) Datenwiedergabegerät
EP0208536A2 (de) Gerät zur Aufzeichnung und/oder Wiedergabe eines zusätzlichen Informationssignales
US5623477A (en) Optical recording disk capable of resynchronization in digital encoding and decoding
EP0479491B1 (de) Wiedergaberät zur Bearbeitung eines Lesesignals aufgezeichneter Daten zur Vermeidung von Fehlern
GB2102163A (en) Servo systems for record discs
EP0335346A3 (de) Magnetisches Aufzeichnungs- und Wiedergabegerät für digitale Signale zur Verwendung bei der Quadraturamplitudenmodulation
DE69409399D1 (de) Lesen von mit unterschiedlichen schreibdichten gespeicherten daten
EP0407094B1 (de) Reproduziereinrichtung für digitale Signale
EP0310442B1 (de) Gerät zur Wiedergabe von digitalen Daten
EP0794531A3 (de) Gerät zur Aufnahme/Wiedergabe von digitalen Signalen und Aufnahmeverfahren
EP0023783A1 (de) Schaltungsanordnung zur Wiedergewinnung von Daten
JP2529335B2 (ja) ディジタル信号記録再生方式
DE3376037D1 (en) Apparatus for reproducing a digital signal recorded with several heads
JPS6486372A (en) Data reproducing device
Kamali Modified Viterbi algorithm applied to run length limited codes
JPS6473564A (en) Data reproducing device
JPS5555417A (en) Reproducing system of magnetic storage device
JPS57154613A (en) Digital modulating system
JPH0526264B2 (de)
JPS57154610A (en) Digital modulating and demodulating system
JPS5587314A (en) Method and device for magnetic recording and reproduction

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19910819

17Q First examination report despatched

Effective date: 19920706

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3852164

Country of ref document: DE

Date of ref document: 19950105

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070913

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070912

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070914

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20080914

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20080914